by Haley Stewart (Author), Elizabeth Wallin (Illustrator)

Beneath the floorboards of G.K. Chesterton's home, a thrilling pursuit is about to unfold...When the prize cheese at the school fair goes missing, the sisters and students at Saint Wulfhilda's School need all their detective wits to solve the mystery. With some literary inspiration from their upstairs neighbors, can they crack the case--and save their school?